Information display system and information display method

ABSTRACT

The information display system according to the present invention includes a status determination unit that acquires a distribution status based on a detection result of a position of an object to be avoided in a target area, a route generation unit that generates a scheduled route on which a vehicle can travel based on the detected distribution status, and a floor display device that displays the scheduled route on a floor of the target area.

TECHNICAL FIELD

The present invention relates to an information display system and aninformation display method.

The present application claims priority based on Japanese PatentApplication No. 2019-077616 filed in Japan on Apr. 16, 2019, thecontents of which are incorporated herein by reference.

BACKGROUND ART

The technology of autonomous vehicles and autonomous driving robots(hereinafter referred to as autonomous vehicles) has advanced, and theseautonomous vehicles have begun to be introduced in various places inblock buildings, showing signs of widespread use. These autonomousvehicles are expected to travel in a state where pedestrian vehiclescoexist, such as in buildings, underground passages, on sidewalks, andon roads with non-separated pedestrian vehicles. Under suchcircumstances, technology and interaction are required to drive smoothlyeven in a crowded status with a large number of people. For example, inthe past, a driver has been driving while alerting a pedestrian by ahorn in an automobile, a bell in a bicycle, an alert sound in an airportcart, or the like.

In addition, since a human driver who communicates with a pedestrian isnot on board an autonomous vehicle, research is being conducted on atechnology for communicating between the vehicle and the pedestrianusing an information interface. For example, a technique has beenproposed in which images of characters and facial expressions aredisplayed by mounting a display on a vehicle body surface of anautonomous vehicle, or by irradiating a road surface with light from aprojector provided in an autonomous vehicle.

Further, for example, Patent Document 1 and Patent Document 2 describesystems capable of displaying information on the floor, in particular,systems in which a projector is installed at an elevator landing todisplay guidance information on a wall, a door, a floor, or the like.

PRIOR ART DOCUMENT Patent Document

-   [Patent Document 1]

Japanese Unexamined Patent Application, First Publication No. 2018-70377

-   [Patent Document 2]

PCT International Publication No. WO 2018/078681

SUMMARY OF INVENTION Problems to be Solved by the Invention

However, when calling attention using sounds such as horns, in anenvironment where autonomous vehicles are widespread, many autonomousvehicles will travel while generating alert sounds, which areineffective and causing noisy environment that is not preferable in thecity.

In addition, in the method of displaying information on the road surfaceby the projector of the autonomous vehicle, the main thing is to informpeople of the state of autonomous vehicles and to communicate betweenroad crossers and vehicles, and it does not encourage coordinationbetween pedestrians in a crowded environment. In addition, eachautonomous vehicle needs to have a function of displaying information onthe road surface.

Further, Patent Documents 1 and 2 are used at the elevator platform, notin the space where the pedestrian vehicle exists.

The present invention has been made in view of such circumstances, andan object of the present invention is to provide an information displaysystem and an information display method capable of promotingcooperation between pedestrians and vehicles while reducing the amountof generated noise.

Means for Solving the Problems

In order to solve the above-mentioned problems, one aspect of thepresent invention is an information display system that includes: astatus determination unit that acquires a distribution status based on adetection result of a position of an object to be avoided in a targetarea; a route generation unit that generates a scheduled route on whicha vehicle can travel based on the detected distribution status; and afloor display device that displays the scheduled route on a floor of thetarget area.

Further, one aspect of the present invention is an information displaymethod that includes: acquiring, by a status determination unit, adistribution status based on a detection result of a position of anobject to be avoided in a target area; generating, by a route generationunit, a scheduled route on which a vehicle can travel based on thedetected distribution status; and displaying, by a floor display device,the scheduled route on a floor of the target area.

Advantageous Effects of the Invention

As described above, according to the present invention, it is possibleto promote cooperation between an autonomous vehicle and a person whilesuppressing influence on the noisy environment. Further, even if theautonomous vehicle is not equipped with a function of displayinginformation on the road surface by a projector, it is possible topromote cooperation between the autonomous vehicle and a person by usingthe information displayed on the road surface.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1A is a conceptual diagram of a space in which the informationdisplay system 1 is used as viewed from the horizontal direction.

FIG. 1B is a conceptual diagram showing a bird's-eye view of the spacein which the information display system 1 is used.

FIG. 2 is a flowchart showing the operation of the information displaysystem 1.

FIG. 3 is a conceptual diagram showing a status of a target area 100.

FIG. 4 is a conceptual diagram showing a status of a target area 100.

FIG. 5 is a conceptual diagram showing a status of a target area 100.

FIG. 6 is a conceptual diagram showing a status of a target area 100.

FIG. 7 is a diagram showing an example of a display mode of the floordisplay device 40.

EMBODIMENTS FOR CARRYING OUT THE INVENTION

Hereinafter, the information display system according to the embodimentof the present invention will be described with reference to thedrawings.

FIGS. 1A and 1B are diagrams showing a configuration of an informationdisplay system according to an embodiment of the present invention. FIG.1A is a conceptual diagram of the status of the space in which theinformation display system 1 is used as viewed from the horizontaldirection. FIG. 1B is a conceptual diagram showing a bird's-eye view ofthe space in which the information display system 1 is used.

The information display system 1 includes a plurality of sensors 10, acongestion status determination device 20, a route generation device 30,a floor display device 40, an autonomous vehicle 50, and a network 60.

The sensor 10 detects structures such as walls, floors, and poles in thetarget area 100 and detects the movement of a group (or person), anautonomous vehicle 50, or the like, thereby detecting the position ofthe group or the autonomous vehicle 50 in the target area 100. Forexample, the sensor 10 can use a camera that captures the target areafrom above or a 3D scanner, and can be installed on the ceiling or wallof the target area 100.

Here, the target area 100 may be arranged so that the target area 100can be detected as a whole by a plurality of sensors 10, such as thesensor 10 a, the sensor 10 b, and the sensor 10 c. Hereinafter, when thesensor 10 a, the sensor 10 b, and the sensor 10 c are not particularlyidentified, they are simply referred to as the sensor 10.

The target area 100 is an area to be monitored when displaying varioussignals by the floor display device 40, and is, for example, anunderground pedestrian space, a building, a sidewalk, a road in whichpedestrians are not separated, and the like.

In the target area 100, there are a plurality of poles 110 (here, poles110 a and 110 b). Such a pole 110 is provided between the floor and theceiling surface.

Further, a person or an autonomous vehicle 50 can pass through thetarget area 100. In this figure, as an example, the case where the group120 a, the group 120 b, and the group 120 c, which are a group ofpassersby, is passing is illustrated.

The congestion status determination device 20 acquires the distributionstatus based on the result of detecting the position of the object to beavoided existing in the target area 100. The congestion statusdetermination device 20 grasps the distribution of congestion of people,goods, and vehicles in the entire space in real time by associating theinformation obtained from the sensor 10 with the floor map. The objectto be avoided referred to here is an object that does not interfere withthe autonomous vehicle 50 when traveling, and is, for example, a person,an obstacle (for example, a wall, a pole, a door, temporarily orpermanently placed furniture, luggage, etc.), autonomous vehicles (otherautonomous vehicles), etc. The floor map is information showing thestructure of the floor which is the target area 100, and is mapinformation showing the positions of walls and poles, the entrances andexits of the target area 100, and the positions of the entrances andexits of shops. The congestion status determination device 20 maps thepositions of the group and the autonomous vehicle 50 detected by thesensor 10 to the floor map, so that it is specified at which position inthe target area 100 the group or the autonomous vehicle 50 exists.

The route generation device 30 generates a scheduled route on which thevehicle can travel based on the detected distribution status.

In a case where there are a plurality of vehicles in the target area,the route generation device 30 determines whether or not the vehiclesinterfere with each other when the vehicles move along the scheduledroute of each vehicle. When there is an interference, the routegeneration device 30 determines a route that does not interfere. Whenthere is an interference, the route generation device 30 generates await time for any vehicle that is interfering. When the degree of changein the congestion status is more than a certain level, the routegeneration device 30 regenerates the scheduled route so as to avoid thecongested area. When the congestion status determination device 20detects that a person has entered the scheduled route, the routegeneration device 30 makes the floor display device 40 display awarning. When the congestion status determination device 20 detects thatthe person does not exit from the scheduled route when the person entersthe scheduled route, the route generation device 30 regenerates thescheduled route. The route generation device 30 notifies the vehicle ofthe generated scheduled route.

The route generation device 30 determines a gap through which theautonomous vehicle can pass between a group of people or objects basedon the distribution status by the congestion status determination device20, determines a scheduled route through which the autonomous vehicle 50can pass based on the gap, and displays a signal on the floor.

In FIG. 3, the target area 100 has an area 102 between the wall 101 aand the wall 101 b through which a person or an autonomous vehicle 50can pass. On the side of the wall 101 a opposite to the area 102, thereis a shop 103 a where people can enter and exit, and on the side of thewall 101 b opposite to the area 102, there is an entrance 104 b wherepeople can enter and exit the area 102. The area 102 includes poles 110c, 110 d, 110 e, 110 f, 110 g, and 110 h. Further, in this figure, aplurality of groups of one or a plurality of people are shown (forexample, a group of 120 d), and a plurality of autonomous vehicles 50 a,50 b, and 50 c are shown. The arrows in the vicinity of each person andthe autonomous vehicle indicate the direction of travel, and the lengthof the arrow indicates the moving speed. The longer the length, thefaster the moving speed.

Here, the scheduled route 130 a is displayed for the autonomous vehicle50 a, the scheduled route 130 b is displayed for the autonomous vehicle50 b, and the scheduled route 130 c is displayed for the autonomousvehicle 50 c.

In this way, in a space that has a specific spread and is expected to becongested (for example, an underground pedestrian space), even whenpedestrians are mixed, by having the information display function in thespace itself (floor) and linking the information display function withthe autonomous vehicle, it is possible to provide a signal displaysystem for promoting smooth movement between an autonomous vehicle and aplurality of pedestrians.

In addition, by using the floor display function, it is possible toseparate pedestrians according to the congestion status, and it ispossible to alert pedestrians.

Returning to FIG. 2, the route generation device 30 can also estimatethe change in the congestion distribution after t seconds based on themoving direction and speed of a person or an object, and generate ascheduled route according to the estimation result.

Further, the route generation device 30 feeds back the scheduled routeto the autonomous vehicle. By detecting the congestion status of thetarget area 100 by the sensor 10 and transmitting the planned travelroute from the route generation device 30 to the autonomous vehicle 50based on the congestion status, the congestion status determinationdevice 20, the route generation device 30, and the autonomous vehicle 50can always share information with each other. When a status changeoccurs in the target area 100, the autonomous vehicle 50 controls theoperation based on the change, and the route generation device 30changes the display of the floor surface display device 40. Theautonomous vehicle 50 preferentially moves on the scheduled route set bythe route generation device 30 unless a large change in the statusoccurs.

The floor display device 40 has an information display function in whichthe floor functions as a display, and by displaying the scheduled routeof the autonomous vehicle 50 on the floor corresponding to the currentposition of the autonomous vehicle 50 in the target area 100, dynamicpedestrian separation can be performed in real time. In a case where thecongestion status determination device 20 detects that a person hasentered the scheduled route, when the route generation device 30 detectsthat the displayed rule has been violated, the floor display device 40displays a warning at a position on the floor (for example, a footportion) corresponding to the current position of a person who hasentered the scheduled route.

As the floor display device 40, for example, a floor display device onwhich a vehicle can be placed or traveled on the floor can be applied.The display may be a liquid crystal display, a plasma display, anorganic EL display, or the like.

By displaying the scheduled route on the floor, surrounding pedestrianscan recognize the display as a signal.

The autonomous vehicle 50 has a sensor that measures the direction of anobstacle and the distance to the obstacle around itself, and travelswhile grasping the surrounding status that it has grasped. Further, theautonomous vehicle 50 transmits its own control information to thecongestion status determination device 20 in real time via the network60. Not that the autonomous vehicle 50 updates/changes the plannedtraveling route at any time only by the information obtained by thesensor of the own vehicle. Instead, by coordinating the congestionstatus determination device 20 with the autonomous vehicle 50, the routegeneration device 30 determines the route considered to be the mostefficient in the entire space (target area 100). The autonomous vehicle50 travels based on a scheduled route obtained from the route generationdevice 30.

Although only one autonomous vehicle 50 is shown in this figure, aplurality of autonomous vehicles 50 may exist in the target area 100.

The network 60 is an information network that is communicably connectedbetween the sensor 10, the congestion status determination device 20,the route generation device 30, the autonomous vehicle 50, and the like.

Next, the operation of the above-mentioned information display system 1will be described with reference to FIGS. 2 to 6. FIG. 2 is a flowchartfor explaining the operation of the information display system 1, andFIGS. 3 to 6 are conceptual diagrams showing the status of the targetarea 100.

The sensor 10 recognizes a person, an object, an autonomous vehicle 50,or the like in the target area 100 (step S100).

The congestion status determination device 20 generates data indicatingthe distribution status in which the recognition result obtained fromthe sensor 10 is associated with the floor map, and detects thecongestion status representing the congestion distribution in the entiretarget area 100 (step S101).

The route generation device 30 generates a scheduled route for theautonomous vehicle 50 based on the generated distribution state (stepS102). Here, when a plurality of autonomous vehicles 50 exist in thetarget area 100, a scheduled route is generated for each of them.

Next, the route generation device 30 targets the scheduled routeassigned to one autonomous vehicle n out of one or a plurality ofautonomous vehicles 50 and sets the scheduled route for a certaindistance from the current position with the others (step S103).

When multiple scheduled routes overlap (interfere with other scheduledroutes) or other scheduled routes are within a certain distance based onthe planned route of the autonomous vehicle n, the route generationdevice 30 obtains the arrival time of each autonomous vehicle 50 to thesection (step S104).

Then, the route generation device 30 determines whether or not theobtained arrival times collide with each other (step S105).

The route generation device 30 holds the information by storing it asanother scheduled route if the requested arrival time does not collide(step S106).

On the other hand, when the obtained arrival times collide, the routegeneration device 30 determines whether or not the scheduled routescolliding with the arrival times are oriented in the same direction(step S107). When facing the same direction, the route generation unit30 overlaps the two scheduled routes (step S108). For example, when thetraveling direction of the other autonomous vehicle 50 is included in acertain range of the traveling direction of the one autonomous vehicle50, a scheduled route is generated so that the other autonomous vehicle50 follows the one autonomous vehicle 50. As a result, the autonomousvehicle 50 can travel without colliding with the autonomous vehicle 50.The route generation device 30 then generates different scheduled routesfor one autonomous vehicle 50 and the other autonomous vehicle 50according to the destination.

On the other hand, when the route generation device 30 does not face thesame direction, a waiting period (a period for pausing or decelerating)is provided for one of the scheduled routes (step S109). As a result, itis possible to prevent the autonomous vehicle 50 from colliding with thevehicle.

The route generation device 30 transmits data indicating the scheduledroute to the floor display device 40 in the target area 100 based on thegenerated scheduled route. Here, since the current position of eachautonomous vehicle 50 can be detected by the sensor 10, image data fordisplaying the scheduled route based on the current position on thefloor display device 40 may be transmitted. Further, the routegeneration device 30 transmits the generated scheduled route to thegenerated target autonomous vehicle 50 via the network 60 (step S110).The floor display device 40 displays the scheduled route on the flooraccording to the data indicating the scheduled route received from theroute generation device 30. Here, the scheduled route within a certaindistance range from the current position of the autonomous vehicle 50 tothe traveling direction is displayed according to the current positionof the autonomous vehicle 50.

Next, the route generation device 30 acquires the distribution statusbased on the recognition result of the sensor 10 after the wait time ofx seconds has elapsed (step S111), acquires the distribution statusbased on the recognition result of the sensor 10, and determines whetheror not all the autonomous vehicles 50 have exited from the target area100 (step S112). If it is determined that all the autonomous vehicles 50have exited, the route generation device 30 ends the process.

On the other hand, if it is determined that all the autonomous vehicles50 have not exited, the route generation device 30 determines whether ornot a person has entered the scheduled route (step S113). The routegeneration device 30 causes the floor display device 40 to display awarning when a person is entering the scheduled route based on thestatus distribution according to the recognition result obtained fromthe sensor 10 (step S114). For example, a message such as “The vehicleis about to pass. Please be careful,” is displayed on the floor by thefloor display device 40 around the person who is detected to be in thearea. By seeing this message, a person who has entered the scheduledroute can move out of the displayed scheduled route by recognizing thatthe autonomous vehicle 50 is in the area where the vehicle is scheduledto pass.

The route generation device 30 determines whether or not a person whohas entered the scheduled route has exited (step S115). If the persondoes not exit, the route that bypasses the person is regenerated as ascheduled route (step S118), and then the process proceeds to step S103.

On the other hand, when the person who has entered the scheduled routeexits, the route generation device 30 determines whether or not therehas been a sudden change in the distribution status on the scheduledroute (step S116). For example, when a large number of people suddenlyenter the target area 100, or when the moving speed of the people in thetarget area 100 suddenly increases (for example, when they startrunning), there are cases where the traveling direction of a person inthe target area 100 is significantly changed. The determination whetheror not there has been a sudden change in the distribution status may beperformed by, for example, comparing the distribution status at the timeof determination with the distribution status before a certain time tlseconds, and based on whether or not there is a change of a certainamount or more with respect to the degree of congestion, the movingspeed of a person, the moving direction, and the like.

The route generation device 30 regenerates the scheduled route whenthere is a sudden change in the distribution status (step S118). Here, ascheduled route through which the autonomous vehicle 50 can pass isgenerated based on a gap through which the autonomous vehicle 50 canpass according to the distribution state after the change occurs.

On the other hand, if there is no sudden change in the distributionstatus, the route generation device 30 extends the scheduled routeaccording to a travel distance (step S117). For example, the routegeneration device 30 obtains a travel distance of the vehicle targetedto extend the scheduled route from the difference between the positionmeasured last time by the sensor 10 and the position measured this timeand extends the current scheduled route by a distance similar to thetravel distance thereof. After that, the process proceeds to step S105.

When the scheduled route is displayed in step S110 of the flowchart ofFIG. 2 described above, as shown in FIG. 3, the route generation device30 determines a gap through which the autonomous vehicle 50 can passbetween a group of people or objects based on the distribution status ofthe congestion status determination device 20, determines a scheduledroute through which the autonomous vehicle 50 can pass based on the gapand transmits data indicating the scheduled route to the floor displaydevice 40. The floor display device 40 displays signals (scheduled route130 a, scheduled route 130 b, scheduled route 130 c) on the floor basedon the data indicating the scheduled route received from the routegeneration device 30.

For example, when a reference distance is the distance in the widthdirection in which the autonomous vehicle 50 can travel with a marginand moving objects are separated by this reference distance (a gap ofabout one person or several persons), the determination of the gap isperformed by recognizing the outline of the group based on the gap anddetermining these to be different groups. Further, when the autonomousvehicle 50 is closer than the distance in the width direction in whichthe autonomous vehicle 50 can travel with a margin, those objects areincluded in the group (determined as one group). Here, in a case wherethere is a gap between objects at a narrower interval than is consideredto be the boundary of the group (a gap narrower than the referencedistance but within a certain difference from the reference distance),the gap can be a candidate for a scheduled route as a place where a gapmay open up to the reference distance. Then, depending on the status inthe target area 100, the scheduled route that has been the candidate maybe applied and set as the scheduled route of the autonomous vehicle 50.

Further, in a case where the route generation device 30 generates thescheduled route so as to overlap the two scheduled routes in step S108,when there are multiple autonomous vehicles heading in the samedirection as shown in FIG. 4, in order to use space efficiently andreduce the possibility of re-changing the route and the possibility ofcollisions, a plurality of autonomous vehicles may be formed in aplatoon to unify the scheduled routes.

Here, the scheduled route 140 b of the autonomous vehicle 50 b isgenerated and displayed so as to follow the scheduled route 140 a of theautonomous vehicle 50 a. On the other hand, since the travelingdirections of the autonomous vehicle 50 c and the autonomous vehicle 50a are different, the scheduled route 140 c of the autonomous vehicle 50c does not follow the scheduled route 140 a and the scheduled route 140b of the autonomous vehicles 50 a and 50 b, and an independent scheduledroute 140 c is generated and displayed.

Further, when the congestion is overcrowded or when the timings ofmovement of people, objects, and vehicles overlap, by providing atemporary stop on one of the scheduled routes in step S109, when one ofthe vehicles temporarily stops as shown in FIG. 5, the route generationdevice 30 generates a scheduled route that gives way. For example, theposition for pausing on the scheduled route 150 c is any position beforethe autonomous vehicle 50c reaches the scheduled route 150 a of theautonomous vehicles 50 a and 50 b. Based on this scheduled route, insome cases, the floor display device 40 displays a warning (referencenumeral 155 c) in advance at an expected point where the vehicle willtemporarily stop. As a result, it is possible to urge people fromentering the temporarily stopped area, and the autonomous vehicle 50 ccan give way to the autonomous vehicle 50 a and the autonomous vehicle50 b.

In addition, if there is a conflict between the route on which thevehicle is scheduled to travel and the direction in which the personwants to move, the person may enter or cross the route. In such a case,in step S114, as shown in FIG. 6, the route generation device 30displays a warning (reference numeral 161 a) at a position where aconflict occurs in the scheduled route 160 a. This can encourage aperson to exit immediately. Further, if sufficient time is required toreach the point and an alternative route can be generated, the routegeneration device 30 can switch the display to the alternative route(reference numeral 162 a). If sufficient time is not available, thestatus of the autonomous vehicle is judged, and stop/avoidance iscontrolled, and the floor display is performed based on the information.

In the above-described embodiment, the floor display device 40 maydisplay the scheduled route in a different display mode depending on thescheduled time from the starting point to the passing point in thescheduled route. For example, as shown in FIG. 7, depending on thelength of the arrival time to each passing point (reference numeral 170,reference numeral 171, reference numeral 172, reference numeral 173, andreference numeral 174) on the scheduled route of the autonomous vehicle50 d, the floor display device 40 may display colors, line types, andthe like in different display modes (reference numeral 170 a, referencenumeral 171 b, reference numeral 172 c, reference numeral 173 d, andreference numeral 174 e). For example, the distance from the currentposition of the autonomous vehicle 50 d to the passing point indicatedby reference numeral 173 is obtained by “speed v2 (speed of autonomousvehicle 50 d)×time t (estimated time to reach the passing pointindicated by reference numeral 173 from the current position)”. Further,the distance traveled by the time t of the person 179 moving at thespeed v1 can be obtained by v1×t, and from this distance and thetraveling direction of the person 179, the scheduled route of theautonomous vehicle 50 d may be obtained so that the person 179 does notinterfere with the vehicle.

In addition, as the distance from the current position of the autonomousvehicle 50 d increases on the scheduled route, the possibility ofchanging the route due to changes in the status increases. Therefore,the degree of determination of the route may be expressed by changingthe type of the line to a display mode such as a dotted line or changingthe transparency of the line (reference numeral 175 a).

According to the above-described embodiment, the optimum route can beperformed for the autonomous vehicle and the pedestrian in considerationof the congestion status of the entire space. Further, even when theautonomous vehicle comes from behind the pedestrian, the floor displayfunction can be used to display a warning for notifying the presence ofthe vehicle to the area in the traveling direction of the pedestrian. Asa result, even if there is an autonomous vehicle 50 that should be notedwhen it is not in the pedestrian's field of view, a warning can bedisplayed within the range of the pedestrian's field of view by usingthe floor display function.

In the above-described embodiment, in a case where a route is generatedin the initial step (for example, step S102), when people areovercrowded in the traveling direction of the autonomous vehicle 50 (forexample, a group is fully lined up from the wall 101 a to the wall 101b) and no gap can be found, the route generation device 30 may generatea route assuming a location where the gap may open. For example, whenthe traveling directions of the autonomous vehicle 50 and the group arethe same, the autonomous vehicle 50 follows behind the group, and forthe feet of the group which are on the front side of the autonomousvehicle 50 in the traveling direction, a warning display may be made towarn that the autonomous vehicle 50 is approaching from behind. As aresult, some people in the group who visually recognize the warningdisplay make a gap, so that the autonomous vehicle 50 can set the gap asthe scheduled route and proceed to the front side of the group. Further,when the traveling direction of the autonomous vehicle 50 and the groupare opposite to each other or the group is staying, as described above,a temporary stop or a warning display is performed to urge the vehicleto make a clear route. As a result, some people in the group whovisually recognize the warning display make a gap, so that theautonomous vehicle 50 can set the gap as the scheduled route and proceedwhile avoiding the group.

In the above-described embodiment, the case where the floor displaydevice uses a display has been described, but various information suchas a scheduled route and warning information may be projected on thefloor by using a projector or the like installed above the floor.

The congestion status determination device 20 or the route generationdevice 30 in the above-described embodiment may be realized by acomputer. In that case, the program for realizing this function may berecorded on a computer-readable recording medium, and the programrecorded on the recording medium may be read by the computer system andexecuted. The term “computer system” as used herein includes hardwaresuch as an OS and peripheral devices. Further, the “computer-readablerecording medium” refers to a portable medium such as a flexible disk, amagneto-optical disk, a ROM, or a CD-ROM, or a storage device such as ahard disk built in a computer system. Further, a “computer-readablerecording medium” may also include those that dynamically hold programsfor a short period of time, like a communication line when a program istransmitted via a network such as the Internet or a communication linesuch as a telephone line, and those that hold the program for a certainperiod of time, like the volatile memory inside a computer system thatserves as a server or client in that case. Further, the above programmay be for realizing a part of the above-mentioned functions.Furthermore, the above-mentioned functions may be realized incombination with a program already recorded in the computer system, andmay be realized by using a programmable logic device such as FPGA (FieldProgrammable Gate Array).

Although the embodiments of the present invention have been described indetail with reference to the drawings, the specific configuration is notlimited to this embodiment, and includes designs and the like within arange that does not deviate from the gist of the present invention.

INDUSTRIAL APPLICABILITY

The present invention can be widely applied to information displaysystems and information display methods, and makes it possible topromote cooperation between pedestrians and vehicles while suppressinginfluence on the noisy environment.

DESCRIPTION OF THE REFERENCE SYMBOLS

1 . . . Information display system

10 . . . Sensor

10 a . . . Sensor

10 b . . . Sensor

10 c . . . Sensor

20 . . . Congestion status determination device

30 . . . Route generation unit

40 . . . Floor display device

50 . . . Autonomous vehicle

50 n 1 . . . Autonomous vehicle

60 . . . Network

100 . . . Target area

100 a . . . Pole

100 b . . . Pole

110 . . . Pole

120 a . . . Group

120 b . . . Group

120 c . . . Group

1. An information display system comprising: a status determination unitthat acquires a distribution status based on a detection result of aposition of an object to be avoided in a target area; a route generationunit that generates a scheduled route on which a vehicle can travelbased on the detected distribution status; and a floor display devicethat displays the scheduled route on a floor of the target area.
 2. Theinformation display system according to claim 1, wherein, in a casewhere there are a plurality of vehicles in the target area, the routegeneration unit determines whether or not the vehicles interfere witheach other when the vehicles move along the scheduled route of eachvehicle, and when the vehicles interfere with each other, the routegeneration unit generate a route in which an interference does notoccur.
 3. The information display system according to claim 2, wherein,when the vehicles interfere with each other, the route generation unitgenerates a wait time for any vehicle in which the interference isoccurring.
 4. The information display system according to claim 1,wherein, in a case where a degree of change in a congestion status ismore than a certain level, the route generation unit regenerates thescheduled route so as to avoid congested area.
 5. The informationdisplay system according to claim 1, wherein the route generation unitnotifies the vehicle of the generated scheduled route.
 6. Theinformation display system according to claim 1, wherein the floordisplay device is a display device.
 7. An information display methodcomprising: acquiring, by a status determination unit, a distributionstatus based on a detection result of a position of an object to beavoided in a target area; generating, by a route generation unit, ascheduled route on which a vehicle can travel based on the detecteddistribution status; and displaying, by a floor display device, thescheduled route on a floor of the target area.